Not much is known about Chris Nolan's next swing into Gotham City. Even the title, The Dark Knight Rises, is still only speculation. But one thing we do know is that Christian Bale is out after this coming movie. He's ready to don his Batman suit one more time, before calling it quits. He explained to sources:

“This will be, I believe, until Chris [Nolan] says different, the last time I’ll be playing Batman. Absolutely, we want to go all out with it.”

Oh, and considering Chris, we have no doubt that he will. The big question is WHEN???

Nowhere in that quote from Bale does he say he's over it or that he wants the next Batman film to be the last. He said that until Nolan says there'll be more, this next one is the last in the franchise. Not saying we need more or that he desperately wants to play Batman indefinitely, but you just reinterpreted his quote.